Anding District, Dingxi City, Gansu Province

Anding District, taking the meaning of "peace and stability", is subordinate to Dingxi City, Gansu Province. It is the seat of Dingxi municipal Party committee and municipal government. It is located in the middle of Gansu Province, with a length of 82.9 kilometers from north to South and a width of 73.3 kilometers from east to West, covering a total area of 4225 square kilometers. The district has jurisdiction over 12 towns, 7 townships and 3 sub district offices, with a permanent resident population of 430500 at the end of 2017.

Anding District began to build a city named "Dingxi village" in 1096 (the second year of Shaosheng in the Northern Song Dynasty), and Dingxi County was built in 1142 (the second year of emperor jinhuangtong). In September 2003, Dingxi County was divided into districts instead of counties, and was renamed "Anding District of Dingxi City".

Anding District is one of the birthplaces of the Yellow River civilization, an important town of the ancient "Silk Road" and a must pass place of the new Eurasian Continental Bridge. It is known as the "throat of Gansu Province and the gateway of Lanzhou". It is 98 kilometers away from the provincial capital Lanzhou. It is an important node city of Gansu Province in the "Lanzhou Baishui metropolitan economic circle", "Guanzhong Tianshui Economic Zone" and "Silk Road" economic belt, including Longhai railway, chanliu railway, Guanzhong Tianshui railway, etc Pingding, Tianding expressway, 312, 310 National Highway through the territory.

In 2017, Anding District achieved a GDP of 8.008 billion yuan, a year-on-year increase of 4.3%. The large caliber fiscal revenue reached 986 million yuan, down 0.3% year on year; the per capita disposable income of urban and rural residents reached 23524.3 yuan and 7122.9 yuan, up 8.3% and 9.1% respectively. On December 6, 2019, it was selected as the pilot unit of promoting the quality improvement of farmers' cooperatives in the whole county. In February 2020, Anding District met the exit conditions of poverty-stricken counties and approved to exit after being approved by the leading group of poverty alleviation in Gansu Province.

Historical evolution

It was inhabited by Qiang people in Xia, Shang and Zhou dynasties. Qin belongs to Longxi County.

In the Han Dynasty, Longshui county was divided into Tianshui county (later changed to Hanyang county), and anding county was under the jurisdiction of xiayaodao county and warrior county.

In the Wei and Jin Dynasties, Anding District belonged to Qinzhou Nan'an county. In the northern and Southern Dynasties, the Han, Xiongnu, Xianbei, Jieshi, Qiang and other ethnic regimes changed constantly, and Anding District was once under the rule of many ethnic groups.

In the Sui Dynasty, the prefectures were changed into prefectures, and Anding District was subordinate to Weizhou.

In Tang Dynasty, it still belonged to Weizhou. In the first year of zongguangde (763), Anding was "trapped in Tubo".

In 1136, Anding District was occupied by Xixia. In the fourth year of Yuanfeng (1081), Emperor Shenzong of the Song Dynasty set out to attack the Xia Dynasty. Li Xian defeated the Xia people and granted the city "dingxicheng" (meaning to stabilize the West). In order to resist foreign invasion, Song dynasty built Anxi city (chankou Dongchuan) and Pingxi city (lujiagou town) in nuzhachuan (now the flat land on the West Bank of Guanchuan River from chankou to lujiagou), and Tongxi city (Longxi tonganyi) in the south.

Jin took Dingxi in 1030, the eighth year of Emperor Taizong's Tianhui reign. In 1142, Dingxi County was established. Zhenyou four years (1216), Dingxi County was promoted to state, jurisdiction Dingxi, Anxi, Tongxi three counties. In the turn of Jin and Yuan Dynasties, Dingxi Prefecture was under the jurisdiction of the commander-in-chief of Jiangdu in gongchang road at the beginning, and then under the control of gongchang Prefecture in Shaanxi Province.

In the 12th year of Zhizheng reign of Huizong of Yuan Dynasty (1352), Xizhou was changed into anding Prefecture, which means "peace and stability".

In 1377, Dingzhou was transformed into anding county. In the eighth year of Yingzong Zhengtong (1443), the new city was built on the basis of the Song Dynasty. The east part of the city was prominent, which was similar to "phoenix spreading its wings", so it was also known as "Phoenix City". At this time, Anding county was under the jurisdiction of gongchang government of Shaanxi Province.

In the Qing Dynasty, Anding was successively subordinate to the general secretary of Shaanxi Province, the general secretary of gongchang, the general secretary of Gansu Province (1668) and the general secretary of gongchang Prefecture of Gansu Province (1669).

In 1913, the government system was abolished and anding county was under the jurisdiction of Lanshan road. In 1914, Anding county was changed to Dingxi County. In 1927, the road was abandoned and Dingxi County was directly under Gansu Province. On the eve of liberation, Dingxi County governed five towns and five townships. In 1936, a small part of the Fourth Front Army of the Red Army crossed the border and established the Soviet regime in the inner government camp. On August 14, 1949, the Peng Dehuai Department of the people's Liberation Army entered Dingxi City and Dingxi was liberated.

On August 19, 1949, the people's Government of Dingxi County was established. On the 22nd of the same month, Dingxi became the seat of the prefectural Party committee. On April 20, 1968, the Revolutionary Committee of Dingxi County was established to implement the "unified" leadership of the party and government. On July 6, 1981, the name of Dingxi County People's government was restored. In September 2003, Dingxi County was renamed Anding District, which was under the jurisdiction of Dingxi City.

administrative division

As of December 2017, Yongding Road sub district, Zhonghua Road sub district and Futai road sub district offices, Fengxiang Town, neiguanying Town, chankou Town, chenggouyi Town, lujiagou Town, xigongyi Town, Ningyuan Town, Lijiabao Town, Tuanjie Town, Xiangquan Town, fujiachuan Town, gejiacha Town, Bailu Town, shixiawan Town, Xinji Town, Qinglanshan Town, Gaofeng Town, Shiquan town and Xingcheng town are under the jurisdiction of the whole district There are 12 towns and 7 townships in Yuanxiang. The district government is located at No.1 Gongyuan Road, Anding District, Dingxi City, Gansu Province.

geographical environment

Location context

Anding District is located in the south of the central part of Gansu Province. It spans between 104 ° 12'48 "- 105 ° 01'06" E and 35 ° 17'54 "- 36 ° 02'40" n. It is 82.9 km long from north to South and 73.3 km wide from east to west, with a total drainage area of 3638.711 square kilometers. It borders Huining County in the East and northeast, Yuzhong County in the West and North, Lintao County in the southwest, Weiyuan County and Longxi County in the south, and Yuzhong County in the southeast It is adjacent to Tongwei County, with a total area of 4225 square kilometers.

topographic features

Anding region belongs to the hilly and gully region of the Loess Plateau in the middle of Gansu Province. In the territory of ravines, ridge ups and downs, terrain from southwest to northeast tilt. High in the South and low in the north. The southwest is mountainous area, and the lower part of the mountainous area is small inner Guanying basin. In the north, there are hills, between which are valleys and terraces cut by rivers. There are 1236 gullies over 1 km in the whole area. Its landforms can be divided into: bedrock low mountain landforms, small Piedmont basins, loess accumulation erosion Changliang landforms, valley plain landforms.

climate

Anding District belongs to temperate continental climate and semi-arid agricultural climate zone in Central Gansu Province. The characteristics of light, heat, water and climate elements are drought, light rich and heat deficient. It is mainly characterized by strong wind and less rain in spring, changeable cold and warm, more cold, concentrated rain, more flood and hail; rapid cooling in autumn, continuous rain, more clouds and fog; clear and cold in winter, dry, less snow, more sandstorm. The annual average temperature in Anding District is 7.2 ℃. The average temperature in the hottest July is 19.3 ℃, and the average temperature in the coldest January is - 6.9 ℃. The average annual temperature range is 26.2 ℃. The extreme maximum temperature was 35.1 ℃ (July 28, 2000), and the extreme minimum temperature was - 29.7 ℃ (December 28, 1991).

Anding District is located in the middle latitude area, with long sunshine hours and high intensity. The total sunshine hours of the whole year is 25002 hours, and the sunshine rate is 56%. 3 hours from March to may in spring, accounting for 26.7% of the annual sunshine hours; 688.4 hours from June to August in summer, accounting for 27.5% of the annual sunshine hours; 532.9 hours from September to November in autumn, accounting for 21.30% of the annual sunshine hours; 611.6 hours from December to February in winter, accounting for 24.5% of the annual sunshine hours.

The annual average frost free period in Anding District is 140 days, accounting for 38% of the annual days and 65% of the growth period of various crops (March to September). As a result, crops are threatened by frost 35% of the time. The frost free period is 145 days in xigongyi town in the northeast, 111 days in Gaofeng Township in the southwest, and 130-145 days in most areas. The longest frost free period is 180 days (2000) and the shortest is 99 days (1997).

Due to the influence of the small terrain of Malian mountain and Huajialing mountain, the regional distribution of precipitation is obvious, and the general trend is decreasing from southwest to northeast. The average annual precipitation is 377 mm. The average annual precipitation of Gaofeng Township in the southwest and Xingyuan Township in the southeast is more than 400mm, while that of lujiagou, Bailu and shixiawan in the north and northeast is less than 300mm. The maximum annual precipitation is 471.1 mm (2003) and the minimum is 264.4 mm (1997), with the maximum difference of 206.7 mm every three years. The precipitation in the year with more water is 1.8 times of that in the year with less water.

hydrology

The river runoff in Anding District is mainly supplied by precipitation. Part of the runoff produced by atmospheric precipitation flows directly into the river from the surface, and the other part seeps into the underground, which is converted into river runoff in the form of spring. The runoff of each river in the territory is mainly self-produced water, with little inflow. Therefore, the size of runoff in different areas basically depends on the amount of precipitation, and its distribution is roughly consistent with precipitation, which has the characteristics of more in the South and less in the north. The southern region is the main runoff producing zone in Anding District. There are 14 main channels with spring overflowing and water all the year round, and the average annual flow is 15-200 L / s. The rest of the channels are seasonal gullies, which produce runoff only in rainy season and flood season.

The total catchment area of Guanchuan river basin is 1132.38 square kilometers, including 1097.91 square kilometers in China and 34.47 square kilometers abroad. The main stream is 104 km long, the runoff depth is 11.7 mm, and the runoff coefficient is 0.029. The annual average runoff is 1 325 * 104 cubic meters, of which 1 285 * 104 cubic meters are self-produced and 40 * 104 cubic meters are imported. The salinity is about 7.0 g / L and the water quality is poor.

The total catchment area of Xigong river basin is 728

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